Home / 121,215.92-181,906.83-42,330.15

Finding the Fourth Proportional to 121,215.92, 181,906.83 and 42,330.15

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Solution

The fourth proportional to 121,215.92, 181,906.83 and 42,330.15 is: 63,524.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,215.92 : 181,906.83 = 42,330.15 : x
  2. Step 2: Convert to fraction form
    121,215.92/181,906.83 = 42,330.15/x
  3. Step 3: Cross multiply
    121,215.92x = 181,906.83 × 42,330.15
  4. Step 4: Simplify right side
    121,215.92x = 7,700,143,399.92
  5. Step 5: Solve for x
    x = 7,700,143,399.92/121,215.92
  6. Step 6: Final answer
    x = 63,524.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.